Planing-machine.



No.723,967-- PATENTEI) MAR. 31-, 1903. E. WUHRMANN.

PLANING MACHINE.

APPLICATION IILED JUN}; 3,1901.

no MODEL.

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t W 2 y 5 UNITED STATES PATENT OFFICE.

EMIL WUHRMANN, 0F ZURICH, SWITZERLAND.

PLANING-MACHINE.

SPECIFICATIOKforming part of Letters Patent No. 723,967, dated March 31, 1903.

Application filed June 3, 1901.

The invention is illustrated in the accompanying drawings, in which- Figure l is a longitudinal section on the line 'y y of Fig. 2, which is aplan corresponding to Fig. 1. Fig; 3 is an enlarged front view of the plane employed in the machine illustrated in Figs. 1 and 2 and is taken on the line or: a: of Fig. 45, which is a longitudinal section corresponding thereto.

The invention consistsof aplaning-machine in which a removable plane is employed which is capable of planing the sides of prismatic blocks on their being forced through the plane by mechanical means, ashereinafter described. 7

As illustrated in the accompanying drawings, the plane b is separately provided and is capable of being inserted in a suitable opening a of the table a, and is fixed in position thereon within a holding-bracket c, which is provided with an adjusting-screw d, which binds the boss of the plane. k

The plane I) is provided with four adj ustable planing-knives U11 1) b the edges of all of which are adjustable within the central opening 12 of the plane. provided integral with the table a for guiding the feeding rod f, which is normally ressed to the left by means of an encircling spiral spring f and is secured to the upper arm of a lever g by its forked extremity f A cam h is provided upon the countershaft of the machine and intermittently makes contact with the lower arm of the lever g, so as to periodically force forward the feeding-rod v On the return movement of the feedingrodf under the action of the spiral spring f contact is made with the rubber buffer 4 Above the table a feeding arrangement is A hollow guide e is Serial No 62,952. (No model.)

upon the rotation of the pulley 7r, conveys the prisms fromthe table at in front of the feeding-rod f. Another feeding arrangement 0 may be provided for depositing the prisms on the table n.

It will thus be understood that the operation of the machine is as follows: At every forward movement of the feeding-rod fthe roughly-cut prism or block is broughtin front of the feeding-rod bymeans of the feeding arrangement and is forced into the central opening b in the plane I), and this opening b for the purpose of facilitating the entry of the prisms therein maybe widened at its mouth, as indicated.

It will thus be understood that each prism as it is forced in carries before it the preced ing one, thus sliding gradually through the plane and passing out at the back. The rod f thereby never comes into contact with the planing-knives, which therefore cannot be damaged.

As the plane is changeable, prismatic bodies of any size or shape can be planed or worked in the machine.

What I claim as-my invention, and desire to secure by Letters Patent, is-- 1. In machines for planing rectangular prismatic blocks in combination a plane, said plane having a rectangular opening longitudinally therethrougli corresponding in shape to the blocks to be planed, slots in said plane corresponding to the respective faces of the opening provided longitudinally through the plane, planing-blades fitted into said slots, the edges of the planing-blades protruding into the opening provided longitudinally in the plane, and a feeding-rod by which said prismatic blocks are successively fed through the plane, substantially as described.

2. In machines for planing rectangular prismatic blocks in combination a plane, said plane having a rectangular opening longitudinally therethrough corresponding in shape to the blocks tobe planed, slots in said plane corresponding to the respective faces of the opening provided longitudinally through the plane, planing-blades fitted into said slots, the edges of the planing-blades protruding into the opening provided longitudinally in the I provided consisting of two pulleys kl and an endless band 'm, passing around them, which v plane, aboss at the forward end of said plane through which said longitudinal opening is continued, means for holding said boss for mounting said plane in the planing-machine, and a feeding-rod by which the blocks are successively fed through the longitudinal opening in the plane, substantially as described.

3. In machines for planing rectangular prismatic blocks in combination a plane, said plane having a rectangular opening longitudinally therethrough corresponding in shape to the blocks to be planed, slots in said plane corresponding to the respective faces of the opening provided longitudinally through the plane, planing-blades fitted into said slots, the

edges of the planing-blades protruding into the opening-provided longitudinally in the plane, and a feeding-rod by which said pris matic blocks are successively fed through the plane, a spiral spring arranged upon said feeding-rod for efiecting its retraction, an operating-lever pivotally connected'to said feeding-rod, a cam provided upon a continuouslyrotating shaft, said cam' on the rotation of said shaft contacting with said lever to operate said feeding rod, substantially as described. V

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

EMIL WUHRMANN.

Witnesses:

H. A. ZITZ, ALBERT ZEIz. 

